opj_dparameters Struct Reference

Decompression parameters. More...

#include <openjpeg.h>

Data Fields
OPJ_UINT32	cp_reduce
	Set the number of highest resolution levels to be discarded. More...
OPJ_UINT32	cp_layer
	Set the maximum number of quality layers to decode. More...
command line decoder parameters (not used inside the library)
char	infile [OPJ_PATH_LEN]
	input file name More...
char	outfile [OPJ_PATH_LEN]
	output file name More...
int	decod_format
	input file format 0: J2K, 1: JP2, 2: JPT More...
int	cod_format
	output file format 0: PGX, 1: PxM, 2: BMP More...
OPJ_UINT32	DA_x0
	Decoding area left boundary. More...
OPJ_UINT32	DA_x1
	Decoding area right boundary. More...
OPJ_UINT32	DA_y0
	Decoding area up boundary. More...
OPJ_UINT32	DA_y1
	Decoding area bottom boundary. More...
OPJ_BOOL	m_verbose
	Verbose mode. More...
OPJ_UINT32	tile_index
	tile number of the decoded tile More...
OPJ_UINT32	nb_tile_to_decode
	Nb of tile to decode. More...
JPWL decoding parameters
OPJ_BOOL	jpwl_correct
	activates the JPWL correction capabilities More...
int	jpwl_exp_comps
	expected number of components More...
int	jpwl_max_tiles
	maximum number of tiles More...
unsigned int	flags

Detailed Description

Decompression parameters.

Field Documentation

cod_format

int opj_dparameters::cod_format

output file format 0: PGX, 1: PxM, 2: BMP

Referenced by opj_set_default_decoder_parameters().

cp_layer

OPJ_UINT32 opj_dparameters::cp_layer

Set the maximum number of quality layers to decode.

If there are less quality layers than the specified number, all the quality layers are decoded. if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded

Referenced by opj_j2k_setup_decoder(), and opj_set_default_decoder_parameters().

cp_reduce

OPJ_UINT32 opj_dparameters::cp_reduce

Set the number of highest resolution levels to be discarded.

The image resolution is effectively divided by 2 to the power of the number of discarded levels. The reduce factor is limited by the smallest total number of decomposition levels among tiles. if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution

Referenced by opj_j2k_setup_decoder(), and opj_set_default_decoder_parameters().

DA_x0

OPJ_UINT32 opj_dparameters::DA_x0

Decoding area left boundary.

Referenced by j2k_to_pnm().

DA_x1

OPJ_UINT32 opj_dparameters::DA_x1

Decoding area right boundary.

Referenced by j2k_to_pnm().

DA_y0

OPJ_UINT32 opj_dparameters::DA_y0

Decoding area up boundary.

Referenced by j2k_to_pnm().

DA_y1

OPJ_UINT32 opj_dparameters::DA_y1

Decoding area bottom boundary.

Referenced by j2k_to_pnm().

decod_format

int opj_dparameters::decod_format

input file format 0: J2K, 1: JP2, 2: JPT

Referenced by opj_set_default_decoder_parameters().

flags

unsigned int opj_dparameters::flags

Referenced by opj_j2k_setup_decoder(), opj_jp2_setup_decoder(), and opj_set_default_decoder_parameters().

infile

char opj_dparameters::infile[OPJ_PATH_LEN]

input file name

jpwl_correct

OPJ_BOOL opj_dparameters::jpwl_correct

activates the JPWL correction capabilities

Referenced by opj_j2k_setup_decoder(), and opj_set_default_decoder_parameters().

jpwl_exp_comps

int opj_dparameters::jpwl_exp_comps

expected number of components

Referenced by opj_j2k_setup_decoder(), and opj_set_default_decoder_parameters().

jpwl_max_tiles

int opj_dparameters::jpwl_max_tiles

maximum number of tiles

Referenced by opj_j2k_setup_decoder(), and opj_set_default_decoder_parameters().

m_verbose

OPJ_BOOL opj_dparameters::m_verbose

Verbose mode.

nb_tile_to_decode

OPJ_UINT32 opj_dparameters::nb_tile_to_decode

Nb of tile to decode.

outfile

char opj_dparameters::outfile[OPJ_PATH_LEN]

output file name

tile_index

OPJ_UINT32 opj_dparameters::tile_index

tile number of the decoded tile

---

The documentation for this struct was generated from the following file:

• openjpeg.h